value unc_up unc_lo author ref method 5.83 0.070 0.070 Masiero 2014ApJ...791..121M NEATM 5.89 0.091 0.091 Masiero 2011ApJ...741...68M NEATM 7.29 0.220 0.220 Masiero 2012ApJ...759L...8M NEATM